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Transcription and Regulation

Transcription and Regulation
Transcription factors are

CATT boxes
TATA boxes
promoters
proteins which bind to DNA and regulate transcription

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

highly glycosylated in their active forms
only active inside the cell
multisubunit enzymes
interchangable with DNA polymerases

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Transcription and Regulation
The complex of RNA polymerase, DNA template and new RNA transcript is called

a translation bubble
transcription bubble
none of these
replication bubble

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Transcription and Regulation
RNA polymerase in prokaryotes has a removable

alpha subunit
both (a) and (b)
beta subunit
sigma subunit

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Transcription and Regulation
Transcription of each set of rRNA genes by RNA polymerasel produces

a single 18S rRNA precursor molecule
a single 5S rRNA precursor molecule
a single 45S rRNA precursor molecule
a single 28S rRNA precursor molecule

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Transcription and Regulation
Promoters for tRNAs are located

both (a) and (b)
downstream from the start codon
none of these
upstream from the start codon

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